#include <vector>
using namespace std;

class Solution {
public:
    int findPoisonedDuration(vector<int>& timeSeries, int duration) {
        int n = timeSeries.size(),ret = 0;
        for(int i = 0 ; i < n-1 ; i++){
            if(timeSeries[i+1] - timeSeries[i] > duration){
                ret += duration;
            }else{
                ret += timeSeries[i+1] - timeSeries[i];
            }
        }
        ret += duration;
        return ret;
    }
};